text: #ifndef FUNCTIONISVIRTUAL_H
  #define FUNCTIONISVIRTUAL_H
  
  #include "DataExtractor.h"
  
  class ConcreteTableColumn;
  class MethodDeclaration;
  
  class FunctionIsVirtual : public DataExtractor {
      
  public:
  
  	FunctionIsVirtual(DataExtractor *next, ConcreteTableColumn *prototype, MethodDeclaration *condition);
  
  protected:
  
      virtual TableColumn *handleExtraction(AbstractTree &tree);
  
  };
  #endif //FUNCTIONISVIRTUAL_H